28332220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{1289}}^1$

素因数の和:1462

約数の個数: 48

約数和(自身を含む): 68483520

約数和(自身を除く): 40151300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 157, 314, 628, 785, 1099, 1289, 1570, 2198, 2578, 3140, 4396, 5156, 5495, 6445, 9023, 10990, 12890, 18046, 21980, 25780, 36092, 45115, 90230, 180460, 202373, 404746, 809492, 1011865, 1416611, 2023730, 2833222, 4047460, 5666444, 7083055, 14166110, 28332220]

約数ペア:

[(1, 28332220), (2, 14166110), (4, 7083055), (5, 5666444), (7, 4047460), (10, 2833222), (14, 2023730), (20, 1416611), (28, 1011865), (35, 809492), (70, 404746), (140, 202373), (157, 180460), (314, 90230), (628, 45115), (785, 36092), (1099, 25780), (1289, 21980), (1570, 18046), (2198, 12890), (2578, 10990), (3140, 9023), (4396, 6445), (5156, 5495)]